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[FDTD]下载了一个fdtd算法的源程序,结果里面代码中有*****is([-1.0 1.0]);这样的语句看不懂 [复制链接]

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离线zhuoruizhuc
 
只看楼主 倒序阅读 0楼 发表于: 2012-05-31
%*********************************************************************** B||;'  
%     3-D FDTD code with PEC boundaries  B||;'  
%***********************************************************************  B||;'  
% B||;'  
%     Program author: Susan C. Hagness   B||;'  
%                     Department of Electrical and Computer Engineering   B||;'  
%                     University of Wisconsin-Madison B||;'  
%                     1415 Engineering Drive  B||;'  
%                     Madison, WI 53706-1691  B||;'  
%                     608-265-5739  B||;'  
%                     hagness@engr.wisc.edu B||;'  
B||;'  
%     Date of this version:  February 2000 B||;'  
B||;'  
%     This MATLAB M-file implements the finite-difference time-domain xooY' El*#  
%     solution of Maxwell's curl equations over a three-dimensional  xooY' El*#  
%     Cartesian space lattice comprised of uniform cubic grid cells. xooY' El*#  
% xooY' El*#  
%     To illustrate the algorithm, an air-filled rectangular cavity xooY' El*#  
%     resonator is modeled.  The length, width, and height of the xooY' El*#  
%     cavity are 10.0 cm (x-direction), 4.8 cm (y-direction), and xooY' El*#  
%     2.0 cm (z-direction), respectively. xooY' El*#  
% xooY' El*#  
%     The computational domain is truncated using PEC boundary xooY' El*#  
%     conditions: xooY' El*#  
%          ex(i,j,k)=0 on the j=1, j=jb, k=1, and k=kb planes xooY' El*#  
%          ey(i,j,k)=0 on the i=1, i=ib, k=1, and k=kb planes xooY' El*#  
%          ez(i,j,k)=0 on the i=1, i=ib, j=1, and j=jb planes xooY' El*#  
%     These PEC boundaries form the outer lossless walls of the cavity.  3>z[PPw  
3>z[PPw  
%     The cavity is excited by an additive current source oriented 3>z[PPw  
%     along the z-direction.  The source waveform is a differentiated 3>z[PPw  
%     Gaussian pulse given by 3>z[PPw  
%          J(t)=-J0*(t-t0)*exp(-(t-t0)^2/tau^2), 3>z[PPw  
%     where tau=50 ps.  The FWHM spectral bandwidth of this zero-dc- 3>z[PPw  
%     content pulse is approximately 7 GHz. The grid resolution 3>z[PPw  
%     (dx = 2 mm) was chosen to provide at least 10 samples per 3>z[PPw  
%     wavelength up through 15 GHz. 3>z[PPw  
3>z[PPw  
%     To execute this M-file, type "fdtd3D" at the MATLAB prompt. 3>z[PPw  
%     This M-file displays the FDTD-computed Ez fields at every other 3>z[PPw  
%     time step, and records those frames in a movie matrix, M, which 3>z[PPw  
%     is played at the end of the simulation using the "movie" command. 3>z[PPw  
% *C_[jk@6  
%*********************************************************************** *C_[jk@6  
  *C_[jk@6  
clear  *C_[jk@6  
%*********************************************************************** *C_[jk@6  
%     Fundamental constants *C_[jk@6  
%*********************************************************************** *C_[jk@6  
  *C_[jk@6  
cc=2.99792458e8;            %speed of light in free space *C_[jk@6  
muz=4.0*pi*1.0e-7;          %permeability of free space *C_[jk@6  
epsz=1.0/(cc*cc*muz);       %permittivity of free space *C_[jk@6  
  *C_[jk@6  
%*********************************************************************** *C_[jk@6  
%     Grid parameters *C_[jk@6  
%*********************************************************************** %"{?[!C ?  
ie=50;       %number of grid cells in x-direction %"{?[!C ?  
je=24;       %number of grid cells in y-direction %"{?[!C ?  
ke=10;       %number of grid cells in z-direction %"{?[!C ?  
ib=ie+1; %"{?[!C ?  
jb=je+1; %"{?[!C ?  
kb=ke+1; %"{?[!C ?  
  %"{?[!C ?  
is=26;       %location of z-directed current source %"{?[!C ?  
js=13;       %location of z-directed current source %"{?[!C ?  
  %"{?[!C ?  
kobs=5; %"{?[!C ?  
dx=0.002;          %space increment of cubic lattice %"{?[!C ?  
dt=dx/(2.0*cc);    %time step %"{?[!C ?  
  %"{?[!C ?  
nmax=500;          %total number of time steps %"{?[!C ?  
  %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
%     Differentiated Gaussian pulse excitation %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
  %"{?[!C ?  
rtau=50.0e-12; %"{?[!C ?  
tau=rtau/dt; %"{?[!C ?  
ndelay=3*tau; %"{?[!C ?  
srcconst=-dt*3.0e+11; %"{?[!C ?  
  %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
%     Material parameters %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
  %"{?[!C ?  
eps=1.0; %"{?[!C ?  
sig=0.0; %"{?[!C ?  
  %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
%     Updating coefficients %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
  %"{?[!C ?  
ca=(1.0-(dt*sig)/(2.0*epsz*eps))/(1.0+(dt*sig)/(2.0*epsz*eps)); %"{?[!C ?  
cb=(dt/epsz/eps/dx)/(1.0+(dt*sig)/(2.0*epsz*eps)); %"{?[!C ?  
da=1.0; %"{?[!C ?  
db=dt/muz/dx; %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
%     Field arrays %"{?[!C ?  
%*********************************************************************** %"{?[!C ?  
ex=zeros(ie,jb,kb); %"{?[!C ?  
ey=zeros(ib,je,kb); = !I8vQ>  
ez=zeros(ib,jb,ke); = !I8vQ>  
hx=zeros(ib,je,ke); = !I8vQ>  
hy=zeros(ie,jb,ke); = !I8vQ>  
hz=zeros(ie,je,kb); = !I8vQ>  
%*********************************************************************** = !I8vQ>  
%     Movie initialization = !I8vQ>  
%*********************************************************************** = !I8vQ>  
tview(:,:)=ez(:,:,kobs); = !I8vQ>  
sview(:,:)=ez(:,js,:); = !I8vQ>  
  = !I8vQ>  
subplot('position',[0.15 0.45 0.7 0.45]),pcolor(tview'); = !I8vQ>  
shading flat; = !I8vQ>  
*****is([-1.0 1.0]); A](}"Pi!n  
colorbar; A](}"Pi!n  
axis image; A](}"Pi!n  
title(['Ez(i,j,k=5), time step = 0']); A](}"Pi!n  
xlabel('i coordinate'); A](}"Pi!n  
ylabel('j coordinate'); A](}"Pi!n  
subplot('position',[0.15 0.10 0.7 0.25]),pcolor(sview'); A](}"Pi!n  
shading flat; A](}"Pi!n  
*****is([-1.0 1.0]); A](}"Pi!n  
colorbar; A](}"Pi!n  
axis image; A](}"Pi!n  
title(['Ez(i,j=13,k), time step = 0']); A](}"Pi!n  
xlabel('i coordinate'); A](}"Pi!n  
ylabel('k coordinate'); A](}"Pi!n  
rect=get(gcf,'Position'); tF1%=&ss  
rect(1:2)=[0 0]; tF1%=&ss  
M=moviein(nmax/2,gcf,rect); tF1%=&ss  
  tF1%=&ss  
%*********************************************************************** tF1%=&ss  
%     BEGIN TIME-STEPPING LOOP tF1%=&ss  
%*********************************************************************** tF1%=&ss  
for n=1:nmax tF1%=&ss  
%*********************************************************************** tF1%=&ss  
%     Update electric fields tF1%=&ss  
%*********************************************************************** tF1%=&ss  
  tF1%=&ss  
ex(1:ie,2:je,2:ke)=ca*ex(1:ie,2:je,2:ke)+... tF1%=&ss  
                   cb*(hz(1:ie,2:je,2:ke)-hz(1:ie,1:je-1,2:ke)+... tF1%=&ss  
                       hy(1:ie,2:je,1:ke-1)-hy(1:ie,2:je,2:ke)); = ;d<Ikj  
ey(2:ie,1:je,2:ke)=ca*ey(2:ie,1:je,2:ke)+...  = ;d<Ikj  
                   cb*(hx(2:ie,1:je,2:ke)-hx(2:ie,1:je,1:ke-1)+... = ;d<Ikj  
                       hz(1:ie-1,1:je,2:ke)-hz(2:ie,1:je,2:ke)); = ;d<Ikj  
ez(2:ie,2:je,1:ke)=ca*ez(2:ie,2:je,1:ke)+... = ;d<Ikj  
                   cb*(hx(2:ie,1:je-1,1:ke)-hx(2:ie,2:je,1:ke)+... = ;d<Ikj  
                       hy(2:ie,2:je,1:ke)-hy(1:ie-1,2:je,1:ke)); = ;d<Ikj  
  = ;d<Ikj  
ez(is,js,1:ke)=ez(is,js,1:ke)+... = ;d<Ikj  
               srcconst*(n-ndelay)*exp(-((n-ndelay)^2/tau^2)); = ;d<Ikj  
%*********************************************************************** = ;d<Ikj  
%     Update magnetic fields = ;d<Ikj  
%*********************************************************************** = ;d<Ikj  
hx(2:ie,1:je,1:ke)=hx(2:ie,1:je,1:ke)+... = ;d<Ikj  
                   db*(ey(2:ie,1:je,2:kb)-ey(2:ie,1:je,1:ke)+... jzQgD ed ]  
                       ez(2:ie,1:je,1:ke)-ez(2:ie,2:jb,1:ke)); jzQgD ed ]  
hy(1:ie,2:je,1:ke)=hy(1:ie,2:je,1:ke)+... jzQgD ed ]  
                   db*(ex(1:ie,2:je,1:ke)-ex(1:ie,2:je,2:kb)+... jzQgD ed ]  
                       ez(2:ib,2:je,1:ke)-ez(1:ie,2:je,1:ke)); jzQgD ed ]  
hz(1:ie,1:je,2:ke)=hz(1:ie,1:je,2:ke)+... jzQgD ed ]  
                   db*(ex(1:ie,2:jb,2:ke)-ex(1:ie,1:je,2:ke)+... jzQgD ed ]  
                       ey(1:ie,1:je,2:ke)-ey(2:ib,1:je,2:ke)); jzQgD ed ]  
%************************************ .. jzQgD ed ]  
jzQgD ed ]  
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离线zhuoruizhuc
只看该作者 1楼 发表于: 2012-05-31
谁能帮我改一下啊,万分 .. ',P$m&z  
',P$m&z  
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在线whynot910

只看该作者 2楼 发表于: 03-11
这是什么语言的代 .. -nXP<v=V  
-nXP<v=V  
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